/**********
  This library is free software; you can redistribute it and/or modify it under
  the terms of the GNU Lesser General Public License as published by the
  Free Software Foundation; either version 2.1 of the License, or (at your
  option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)

  This library is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
  more details.

  You should have received a copy of the GNU Lesser General Public License
  along with this library; if not, write to the Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 **********/
// "liveMedia"
// Copyright (c) 1996-2011 Live Networks, Inc.  All rights reserved.
// A G711 audio stream source
// C++ header

#ifndef _G711_AUDIO_STREAM_SOURCE_HH
#define _G711_AUDIO_STREAM_SOURCE_HH

#ifndef _FRAMED_SOURCE_HH
#include "FramedSource.hh"
#endif

class G711AudioStreamSource: public FramedSource {
    public:
        unsigned char bitsPerSample() const { return fBitsPerSample; }
        unsigned char numChannels() const { return fNumChannels; }
        unsigned samplingFrequency() const { return fSamplingFrequency; }

        static G711AudioStreamSource* createNew(UsageEnvironment& env);

    protected:
        G711AudioStreamSource(UsageEnvironment& env);
        // called only by createNew()

        virtual ~G711AudioStreamSource();

    private:
        // redefined virtual functions:
        virtual void doGetNextFrame();

    private:
        unsigned char fNumChannels;
        unsigned fSamplingFrequency;
        unsigned char fBitsPerSample;
        unsigned fPreferredFrameSize;
        Boolean fLimitNumBytesToStream;
        unsigned fNumBytesToStream;
        unsigned fLastPlayTime;
        double fPlayTimePerSample; // useconds
};

#endif
